Tiffany Biason Dy, MD
Allergy & Immunology (Internal Medicine) Physician · Saint Louis, MO
Tiffany Biason Dy, MD is an allergy & immunology (internal medicine) physician with a practice address in Saint Louis, Missouri, and NPI 1528292174, issued on May 12, 2009. Check the license (Missouri 2014003240, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Tiffany Biason Dy
- Credential
- MD
- Primary taxonomy
- Allergy & Immunology (Internal Medicine) Physician 207RA0201X
- License number
- 2014003240 MO
Self-reported in NPPES; status is on the state search - Practice location
- 5201 Mid America Plz, Saint Louis, MO 63129
- Phone
- (314) 996-8670
- Enumerated
- May 12, 2009
- Record last updated
- Apr 17, 2025
- Fax
- (866) 362-4984
- Medicaid ID
- 200013020 MO
- Medicare enrollment
- Enrolled (PECOS I20140527001043); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest allergy & immunology (internal medicine) physician records → All 28 in Missouri → Look up another NPI →
Also registered at 5201 Mid America Plz
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Linda Boucher, FNPFamily Nurse Practitioner1437634904
- Koushik Das, MDGastroenterology Physician1023245859
- Angela Demetrulias, ODOptometrist1194013086
- Nicole Ducharme, DOEndocrinology, Diabetes & Metabolism Physician1346208394
- Omar Elsayed-Ali, MDAllergy & Immunology (Internal Medicine) Physician1174064596
- Senada Fenelon, AGNPGerontology Nurse Practitioner1174295323
Verify Tiffany Biason Dy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
Search for license 2014003240Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.2 times the Medicare Part D claims of the average allergy & immunology (internal medicine) physician in 2024
1,731 Medicare Part D claims for 210 beneficiaries, against an average of 789 among the 429 providers of this specialty who prescribed in Part D.
Most prescribed
- Fluticasone Propionate134 claims
- Montelukast Sodium127 claims
- Azelastine Hcl102 claims
- Albuterol Sulfate Hfa100 claims
- Dupixent Syringe98 claims
- Azithromycin94 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 79.3 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $145.31
3 payments; by number, the most common kind was food and beverage; the largest payer was Acumed LLC. The 321 providers of this specialty with any payment received $7,456.30 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Washington UniversitySaint Louis, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Tiffany Biason Dy among 28 allergy & immunology (internal medicine) physician records in Missouri
Tiffany Biason Dy, MD is one of 28 allergy & immunology (internal medicine) physician records with a practice address in Missouri. 86% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 54% of them.
- NPI issued2009 · 54% of these records are older, 43% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated2009 · median 2006 among the 20 with a school on file
- Record last updated2025 · 32% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RA0201X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Allergy & Immunology (Internal Medicine) Physician providers in Missouri
There are 28 allergy & immunology (internal medicine) physician records in Missouri.
All 28 in Missouri → Every provider in Saint Louis → Allergy & Immunology (Internal Medicine) Physician nationwide →
The 8 allergy & immunology (internal medicine) physician records with the nearest ZIP codes
- Omar Elsayed-Ali, MDSaint Louis, MO 631291174064596
- Jennifer Monroy, MDSaint Louis, MO 631291669633889
- Cheshil Dixit, MDSaint Louis, MO 631271821452863
- James Temprano, MDSaint Louis, MO 631271093729972
- Maya Jerath, MDSaint Louis, MO 631411467661801
- Shirley Joo, MDSaint Louis, MO 631411144262825
- Barbara Jost, MDSaint Louis, MO 631411144243031
- Armen Sanosyan, MDSaint Louis, MO 631411538721295
Common questions
What is Tiffany Biason Dy, MD's NPI number?
Tiffany Biason Dy, MD's National Provider Identifier (NPI) is 1528292174, issued on May 12, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Tiffany Biason Dy, MD located?
The NPPES record lists a practice address at 5201 Mid America Plz, Saint Louis, MO, 63129. Phone: (314) 996-8670. Providers update this record themselves, so call before visiting.
How can I verify Tiffany Biason Dy, MD's license?
NPPES lists Missouri license number 2014003240, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Tiffany Biason Dy, MD prescribe under Medicare Part D?
In 2024, Tiffany Biason Dy, MD had 1,731 Medicare Part D claims for 210 beneficiaries; the average among allergy & immunology (internal medicine) physician prescribers was 789. Part D covers Medicare prescriptions only.
What is Tiffany Biason Dy, MD's MIPS final score?
The 2023 MIPS final score is 79.3 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.